Re: Reading snapshot
Hi Ram, I think reading the snapshot file while restarting the ZK service is for faster recovery. With the help of snapshots and transaction logs, the ZK server should be able to recover to the state when the snapshot was created, then the ZK server only needs to "replay" the transactions between the current zxid and the latest zxid, instead of transfer all the data through the network. I think in general, disk is still faster than network, although many factors will affect the results: https://serverfault.com/questions/238417/are-networks-now-faster-than-disks HTH, Zhewei -- Sent from: http://zookeeper-user.578899.n2.nabble.com/
Re: Zookeeper resolving to old host IP addresses
Hi Ram, I also faced this issue before. I think JVM only resolves the DNS records once when ZK service starts. After that, even if you update the DNS record to a new IP address and the ZK server itself is able to resolve the new DNS record, the JVM will not pick up the new IP address. I think the only way is to restart the ZK service. You could use IP addresses instead of DNS records in your ZK config. In this way, each time you want to replace a ZK server, you could launch a new server with the same IP address. This could fix the issue. Btw, with the dynamic config feature introduced in ZK 3.5+, ZK should be able to recognize the IP address of the new ZK server automatically. HTH, Zhewei -- Sent from: http://zookeeper-user.578899.n2.nabble.com/
Re: [ANNOUNCE] Apache ZooKeeper 3.7.0 released
Thanks for all your work Damien, and also for all the contributors and for the whole community. It's great to see 3.7.0 out! :) Cheers, Mate On Sun, Mar 28, 2021 at 9:39 AM Damien Diederen wrote: > > The Apache ZooKeeper team is proud to announce Apache ZooKeeper version > 3.7.0. > > ZooKeeper is a high-performance coordination service for distributed > applications. It exposes common services - such as naming, > configuration management, synchronization, and group services - in a > simple interface so you don't have to write them from scratch. You can > use it off-the-shelf to implement consensus, group management, leader > election, and presence protocols. And you can build on it for your > own, specific needs. > > For ZooKeeper release details and downloads, visit: > https://zookeeper.apache.org/releases.html > > ZooKeeper 3.7.0 Release Notes are at: > https://zookeeper.apache.org/doc/r3.7.0/releasenotes.html > > We would like to thank the contributors that made the release possible. > > Regards, > > The ZooKeeper Team >
[ANNOUNCE] Apache ZooKeeper 3.7.0 released
The Apache ZooKeeper team is proud to announce Apache ZooKeeper version 3.7.0. ZooKeeper is a high-performance coordination service for distributed applications. It exposes common services - such as naming, configuration management, synchronization, and group services - in a simple interface so you don't have to write them from scratch. You can use it off-the-shelf to implement consensus, group management, leader election, and presence protocols. And you can build on it for your own, specific needs. For ZooKeeper release details and downloads, visit: https://zookeeper.apache.org/releases.html ZooKeeper 3.7.0 Release Notes are at: https://zookeeper.apache.org/doc/r3.7.0/releasenotes.html We would like to thank the contributors that made the release possible. Regards, The ZooKeeper Team
